2656128044 has 18 divisors (see below), whose sum is σ = 4859111460. Its totient is φ = 1270321096.

The previous prime is 2656128031. The next prime is 2656128049. The reversal of 2656128044 is 4408216562.

It is a super-2 number, since 2×2656128044² = 14110032372246531872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2656127989 and 2656128007.

It is not an unprimeable number, because it can be changed into a prime (2656128049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 625514 + ... + 629745.

Almost surely, 2^2656128044 is an apocalyptic number.

It is an amenable number.

2656128044 is a deficient number, since it is larger than the sum of its proper divisors (2202983416).

2656128044 is a wasteful number, since it uses less digits than its factorization.

2656128044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255309 (or 1255284 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 2656128044 is about 51537.6371596526. The cubic root of 2656128044 is about 1384.8933687407.

The spelling of 2656128044 in words is "two billion, six hundred fifty-six million, one hundred twenty-eight thousand, forty-four".